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17 lines
525 B
Plaintext
17 lines
525 B
Plaintext
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shader_type canvas_item;
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uniform sampler2D map; // GradientTexture
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uniform sampler2D selection;
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void fragment() {
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vec4 original_color = texture(TEXTURE, UV);
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vec4 selection_color = texture(selection, UV);
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vec4 output = original_color;
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float value = (0.2126 * original_color.r) + (0.7152 * original_color.g) + (0.0722 * original_color.b);
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vec4 gradient_color = texture(map, vec2(value, 0.0));
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output.rgb = gradient_color.rgb;
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output.a *= gradient_color.a;
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COLOR = mix(original_color, output, selection_color.a);
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}
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